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Appendix B: Maintenance
CFG280 User Manual
25
Toggle the
SOURCE button.
Inappropriate Counter Reading
Start.
Is the
digital display
frozen?
Are
function, gate,
and attenuation
settings appropriate for the
input
signal?
Send your instrument to
the nearest Tektronix
service center.
Change settings to
accommodate the
input signal.
Are
you using the
external input
connector?
Check connection and
voltage level of signal.
No
Yes
Yes
No
Yes
No